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(ModeL) R. S. CARR & J. W. SEE.

GRAIN DRILL ATTACHMENT.

No. 274,459. Patented Mar. 27,1883.

WITNESSES: W 5 j ZNVENTOR s F W"%'$ ic M W W. S m

ATTORNEY UNITED STATES PATENT OFFICEO ROBERT S. CARR AND JAMES w. SEE, EHAlillLTON, onio, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE SOHN RIDGEIMPLEMENT COMPANY, OF SAME PLACE.

GRAIN-DRILL ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 274,459, dated March2'7, 1883.

To all whom it may concern: J, a stem from casting I to index-pointer H,

Be it known that we, ROBERT S. CARR and also serving as a guide byfitting in slot It;

JAMES WV.- SEE, both of Hamilton, Butler K, a worm fixed to shaft B andseated in the county, Ohio, have invented certain new and housing I; L,a hanger pendent from and 5 useful Improvements in Grain-DrillAttachformed with housing-casting I; M and N, two

ments, of which the following is a specification. worm-wheels supportedby hanger L and en- This invention relates to the construction of gagingwith worm K, the worm-wheel N havan attachment for grain-drills, tofurnish a ing a less number of teeth than the worm-gear means foradjusting the usual seed-wheel shaft l\I- say one tooth less 0, apointer attached I0 longitudinally, and forindicating the position tothe hub of worm-gear N and adjustable of the shaft and also its progressof rotation. around the axis of the worm-gears; S, a rack In theaccompanying drawings, Figure l is rigidly attached to casting I andprojecting to a front view of the attachment; Fig. 2, a plan; the rearof housing E; T, a disk fixed on the Fig. 3, a section on line a a; Fig.4, a section rear end of shaft U; W, a scroll-thread on the 15 on line bb, and Fig. 5 aface view of the scrollrear face of disk T, adapted toengage with disk T. I the teeth of therack S; and V, a bolt through Thisdevice is intended for attachmentto the hubs of the worm-wheels M and N.6

that class of grain-drills in which a series of When hand wheel F isrotated the scrollseed-cups fixed under a hopper have their inthread W,engaging with the teeth of rack S,

20 ternal seeding-wheels rotated by a shaftpasswil move the housing Ilongitudinally, and ing through all the seed-cups, the rate of feed willthus adjust the shaft and seed-wheels, the being altered by moving theshaft endwise, degree of movementbeingindicated by pointer and thusaffecting in a certain degree the seed- H on tablet Gr. ing-wheels,which are attached to the shaft. The revolving shaft B, through worm K,ro-

25 The shaft beingoperated by gearing connected tates both worm-gears Mand N in the same with the traction-wheels ot' the machine, thedirection; but as the rear wheel, N, has one progress of rotation of theseed-Wheel shaft tooth more or less teeth than the front gear, willindicate the progress of travel of the en- M, it follows that the rearwheel, N, revolves tire machine over the field, and this progresssomewhat faster than wheel M, and that this 7 0 may be expressed inacres traversed over. superior diligence on the part ofwheel N willMeasuring the land in this manner by means be indicated by the pointer Ogradually travot' a counter on the grain-drill is a very comersing theindications on the face of the gear mon practice. M. In the drawings theparts are assumed as In the drawings, A represents a portion of soproportioned with reference to the main 5 the bottom of thehopperorseed-box ot' acomwheels of the grain-drill that while thegrainmon seed-drill; B, the usual seed-wheel shaft, drill traverses fiveacres of land the rear wormlocated beneath the hopper; 0, one of theusual gear, N,wlll gain one complete revolution over seed-cups; D, theseed-wheel, fitted to revolve the front wornrgear, M. in and be adjustedlongitudinally in the seed- In starting in the field the pointer O'maybe 0 cup by proper motionsof the shattB, to which set at zero by hand,as it is held to the hub of it is fixed; E, a casting bolted by bolts Qto gear N by the friction-nut V only. This form the hopperA,andfurnishing bearingsforshal't of land-measurer is especially adapted tothe U; F, a hand-wheel on shaft U; G, a gradurough and cheapconstructions generally emated tablet on the housing E; H, anindexbodied in grain-drills, the lost motion of the 45 pointer for thetablet G; I, a housing-casting parts having little or no eliect, as thezero also receiving shaft B and arranged to slide freely, moves and willbe affected by the same influbeing attached to the hopper A loosely bybolt ences, which would tend to give slight erratic 5 P, seated in aslot in the housing-casting I; movements to the pointer on the gear N.The

l 1. The combination, substantially as set forth,

of Worm-counter M N,worn1 K,housing' Lmck IO S, housing E, hand-Wheel F,shaft U, and

scroll-disk T W.

2. Thecombinzttion,substantiallyas set forth, of housing I, havinghanger L, worm K,Woi'u1- wheels M and N, pointer O, and bolt V.

ROBERT S. CARR. JAMES W. SEE.

Witnesses J OHN LORENZ, NELSON WILLIAMS.

